Flue gas damper and sealing fan pipe thereof

Abstract

The invention provides a sealing fan pipe of a flue gas damper. The sealing fan pipe of the flue gas damper comprises a fan pipe. A water trap capable of preventing air from flowing is arranged on the fan pipe. The highest water level of the water trap is lower than the air inlet and the air outlet of the fan pipe. A water valve is arranged on the water trap. The sealing fan pipe of the flue gas damper has the advantages that since the water trap is arranged on the fan pipe and the water valve is arranged on the water trap, the water valve can conveniently control the water to get in and out and the water trap can be opened and closed; since the water has good sealing performance and can prevent the air from flowing, the flue gas cannot pass; and since the water can prevent the water trap from being corroded, the sealing fan pipe provided by the invention not only can be opened and closed, but also can effectively prevent the flue gas from flowing when the sealing fan pipe is closed.

Description

technical field [0001] The invention relates to the field of sealing technology, in particular to a sealed fan duct for a smoke baffle door. The present invention also relates to a smoke damper door comprising the above-mentioned sealed fan duct. Background technique [0002] At present, the flue gas desulfurization systems of domestic power plants are generally equipped with flue gas baffle doors. The flue gas baffle doors are large valves installed on the flue of the desulfurization system, mainly to block the flow of flue gas. The design and layout of the flue gas baffle system play a very important role in the safe operation of the desulfurization device. [0003] The flue gas baffle door includes the baffle door, the sealing fan and the fan pipe connecting the sealing fan and the baffle door. When the flue needs to block the flow of flue gas, close the baffle door, start the sealing fan, and send air to the interlayer of the baffle door. A large amount of air is blown...

AI Technical Summary

Problems solved by technology

When the flue needs flue gas circulation, open the baffle door and close the sealing fan at the same time to ensure the smooth passage of the flue gas, and the flue gas in the flue will leak into the sealing fan along the sealing fan pipe, which is harmful to the sealing fan equipment parts Serious corrosion is caused, and the flue gas leaks through the air inlet of the fan, causing environmental pollution

[0004] Those skilled in the art have installed valves on the sealed fan pipes. Although the valves can open and close the sealed fan pipes, it is difficult for the valves to prevent the leakage of flue gas. The effect is not ideal, and the valves are easily damaged by flue gas corrosion. Replacement, the cost is high, so the valve cannot effectively solve the above problems

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